Question

A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?

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Answer 1

Answer:

Correct option is

A

38.5 kl

For a conical pit, diameter d=3.5m.

∴ Radius (r)=

2

d

=

2

3.5

m=1.75m.

Also, Depth (h)=12m.

∴ Capacity of the conical pit

=

3

1

πr

2

h=

3

1

×

7

22

×(1.75)

2

×12

=38.5m

3

=38.5×1000l=38.5kl.

Hence, option A is correct.